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Finding the Fourth Proportional to 555,090.81, 766,043.88 and 340,189.35

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Solution

The fourth proportional to 555,090.81, 766,043.88 and 340,189.35 is: 469,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,090.81 : 766,043.88 = 340,189.35 : x
  2. Step 2: Convert to fraction form
    555,090.81/766,043.88 = 340,189.35/x
  3. Step 3: Cross multiply
    555,090.81x = 766,043.88 × 340,189.35
  4. Step 4: Simplify right side
    555,090.81x = 260,599,969,608.68
  5. Step 5: Solve for x
    x = 260,599,969,608.68/555,090.81
  6. Step 6: Final answer
    x = 469,472.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.